Controlling apparatus for centrifugal machines



"Feb 25, 1 930. I o. ATHENSTEDT 1,748,165

com-ROLLING APPARATUS FOR CENTRIFUGAL MACHINES Filed 0ct.. 10', 1927 5 sheets-sheet 1 v lnventoli- 1 ozzommm o. ATHENSTEDT 1,748,165

Feb. 25, 1930.

CONTROLLING APPARATUS FOR CENTRIFUGAL' MACHINES 5 Sheets-Sheet 2 Filed Oct. 10, 1927' 4 O.ATHENSTEDT L J65 QONTROLLING APPARATUS FOR GENTR IFUGAL MACHINES 'Filed 0bt.'l0, 1927 5 Sheets-Sheet 5 Feb; 25, 193$). o. ATHENSTEDT 8 5 GQNTROLL ENG APPARATUS FOR CENTRIFUGAL MACHINES Filed 0c t. 10/1927 5 sheets -sneet 4 I Inventor 030Ai7 2@ i6d@ Adar/23 Feb, o. ATHENSTEDT I CONTROLLING APPARATUS FOR CENT RIFUGAL MACHINES Filed Ogt. 10, 1927 5 Sheets-Sheet 5 f s:- PEI-3521:1212; I 101 67 Aiior/zg 50 Fig. 1, is a A;

Patented rebgzs, 1 930 T' D if -I-ATES PATENT orro n'rnmsrnn'r, or mack, GERMANY z.

oon'rnoimms nr'rm'rosroa on vrnp's'uenn moms Application filed october lo, 1927, Serial No.

My invention relates to improvements in .controlling apparatus for centrifugal machines, and one of the objects of the improve- I I ments is to provide an apparatus for setting uid to different gutters or the like. My im-' 'proved controlling apparatus maybe used connection with centrifugal machines used in the manufacture of'sugar for delivering the liquidmatter thrown from the centrifugal basket to different gutters, according to the requirements of the manufacture. Thus my improved apparatus may be used for delivering the molasses and the, washing liquid or liquids to different gutters, or it may be used in the refining of sugar for delivering the liquid or liqulds separated from the sugar being-refined to different gutters. Another nite succession after separating the molasses from the sugar, the delivery pipe of the centrifugal machine being ,simultaneo usly set into position for delivering the sald washingv liquids to different guttersl Finally, an object of the. improvements 1s to provide automatic means for locking the gate controlling the supply of the charge of sugar to the basket in closed position, until the operation of thecentrifugal machine has been finished, and the basket has been arrested, and forpreventing the supply of the washing liquid or liquids to the basket before the c'harge ofsugar has been filled'into the same 'd the basket has been setto motion.

'ith these and other objects in view my invention consists in the matters to be described hereinafter and particularlypoint ed out in the appendedclaims; 1

' For the purpose of explaining the invention several examples embodying the same have been'sho'wn in the accompanying drawings in which the same reference characters "'havebeen used in all the views toindicate corresponding dparts In said drawings,

agramma'tical .view showing object of the improvements is to provide an 225,203, and in Germany November 4, 1m.

certain apparatus of a sugar mill to which my inventlon is applied,

Fig. 2,. is a diagrammatical view showing the controlling apparatus used in the system shown in Fig. 1,

\ a Fig. 3, is a somewhat di'agra'mmatical-elevation .showing an electrically operated switch used in the apparatus shown in Fig. 2,

Fig. 4, isan elevation showing a part of the controlling apparatus shown in Fig. 2 and looking the direction of the arrows 5, is a: diagrammatical top plan view of Fig. 4 showin the controlling a paratus ina position di erent from that i ustrated in Fig. 2,

Fig. 6, is an elevation similar to the one :hown'in Fig. 1 and illustrating a modifica- Fig. 7 is a partial plan view on an enlarged scaleof the centrifugal machine showing the locking means for the basket,

Fig. 8, is a diagram showing the left hand part of the controlling apparatus and its electrical connection in detail, and

Fig. 9, is a similar diagra right hand part of the said ontrolling apparatus and its electrical connections.

' Referring now to the exampleillustrated in Figs. 1- to 5, the parts .ofthe sugar mill to whieh ny invention relates consist of a mixer a of any known or preferredsform, a

showing the distributing apparatus 6, and one or more centrifugal baskets c. 'To the mixer a the sugar is sup lied from the vacuum pans (not .gate or gates are'adapted to be opened and closed by means of a hand operated lever e. The sugar discharged from the apparatus 6 is delivered to the basket or'baskets a by means of a chute or gutter d Within the said basket the molasses is 'drainedfrom the sugar), the sugar being left within the'basket,

and the washing liquids and molasses being passed throu h a pipe f and a valve i to a \gutter g.

Hen p ating he-m a s from the sugar a washing liquid, steam, or the like-is sprinkled on the sugar, and the said washing liquid is delivered through the pipe f and the valve 2' to a second gutter it." It appears therefore that the valve 11 must be op-' the-gutter g orwith the gutter 'h,and the reversing of the valve '5 from the position connecting the pipe f with the gutter :g lnto the position for connecting the said pipe with the gutter It must take place according to 1 the conditions of the operation of the system either before or after supplying the fwashing liquid tothe basket, while the opposite operation of the said valve for connecting the pipe f with the gutter 9 must take place when a,new charge of sugar is supplied to the basket. For thus operating the valved, an electromagnet k is provided, which when energized lifts the valve cone 2' into the position shown in Fig. 1 for connecting the pipe 7 with the gutter h, a spring 70 being provided for forcing the valve cone v5 downward- 1 ly and into position for connecting the pipe f connected by leads-29, and-17, 18 with] terminals 3,4 and 6, 7 of a controlling ap-' paratuso, and the said controlling appara- I shown'in Fig. 4. To the top face of the "mber'y an insulating plate'g is fixed. The A pt'aot'members .13, 32, 25, z and ycooperate w th bushes a), 34: and mounted one disk 36 fixed to a spindle 36 rotatably mounted in the base plate 37 .and carrying a hand operated "crank ,The brushes :1; and 34 are electrically connected with each otherby alea'd 26 and a spring 26 connected therewlth, and-the brush 35 comprises two arms' adapted to bridge thecontact'members 13, 32.. Nor- ;mal l the spring 26 holds the brush a: in position above the contact member *3 and the insulating plate is shown in and erated for connecting the pipe [either withtus and terminals 5 and 6 of the said control-- ling apparatus are connected by leads 15, 16- I with terminals 9, IQ of a switch p, the switcharm of the said'switch beirzzg 1' ilev'er ejcontrollingthe gate of the distribt a 16mm rockingly mounted on the'disk 36, into position for passing below the bottom face of the {contact member 3 The aforesaid terminals 3, 4, 5, 6, 7, -8 and terminals 1, 2 are mounted on the base plate 37. Further an electromagnetic switch 38 is mounted on the said 1 base late. The armature 39 of the said switc is adapted to connect contact members, I 28 and 22.

In addition to the leads 15. 16,17, 18 and 29, 30 the following leads are provided: The terminals 1, 2 are connected byleads11and23 withasource of electric energ The terminal 1 is connected by leads 12 and 14.- with the contactmember 13 andtheterminal 5 respectively, the terminal 2 is' electrically connected with the terminal 3, the terminal 4 is connected by a lead 31 with the contact member 32, the terminals 6 and 7are electrically connected with each other, and the terminal 8'is connected by leads 191 and 20 with the contact members y and a respectively. The contact mem; her a is connected by a lead 21 with the contact member 22, the contact member 28 is connected by a lead 27 with the contact member 25 and the electromagnetic switch 38 is connected by leads 25 and 24 respectively wiph the contact member 25 and the termina 3.

Before supplying the charge of sugar to the basket 0 the parts, and more particularly the levers e and 35 are in the positions shownin Fig. 2, and, the electromagnetic switch 38 holding the contact members 22' and 28 in engagement with each other, an electric current is supplied from the source of electric energy as follows: 11,1, 14, 5, 15, 10, e, 9,.

' 1e, '6, 7, 17, k, 18, s, 20, z, 21, 22, 39, 2s,

27, 25, 25, 38, 24, 3', 2, 23. Thus the. electromagnet is is energized, and it holds the valve cone 2' in theppsition shown in Fig. 1, so thaththe pipe f'coinmunicates with the gutv V v For supplying a charge of sugar to thebask hot 0 the lever e is rocked downwardly. 1 1

Thereby the gate (1 is opened, and the electri-' cal connection between the terminals 9 and 10 is broken and the aforesaid current is interrupted; Therefore the armature 39 of the electromagnetic switch 38 is retracted by a spring 41lfrom the contact members'22 and I 28, andthe s ring k forces the valve cone i downward y .thus connecting the pipe f, within the gutter g.

After the basket 0 has been filled the levere 12o 1s afgain rocked upwardly. Thereby the gate d o the distributing apparatus is closed, and the contact members 9, 10 are again electrically connected. The electromagnetic switch 38is-notafiected.

' After the molasses has been drained from the sugar, the spout Z is rocked into position for delivering washing liquid .to the basket,

and the crank 33 of the controlling apparatus c is into the position shown in Fig. 5.

Thereby thebrush 35 bridges the contact members 13 and 32, the brush 2: passes below the contactmember z without making contact therewith and engages the contact member a. The brush 34 does not disengage the contact member 25, the latter being comparatively long. Now twoelectric currents flow from the source of-electric current as follows: first, 11, 1, 12, 13, 35, 32, 31, 4, 30, n,'29, 3, 2, 23; and second, 11,1, 14, 5, 15,

1 e,\9, 16, 6, 7, 17, 1:, 1s, 8, 20, z, w, 26,

34, 25, 25, 38,, 24, 3, 2, 23. By the supply of electric current to the first-named. circuit the electromagnet n is energized SJ that thevalve m is opened, and ,by the current flowing through the second circuit the electromagnet It is energized, so that the valve z is set into position. for connecting the pipe f with the gutter h. Further, the second circuit includes theelech'oma-gnet of the switch 38 which'therefore attracts the armature 39 and closes the contacts 22 and 28. By closing the contacts 22, 28 the aforesaid circuits are "not aflected but a third circuit is closed the function of which will be described hereafter.

After the washing liquid has sufficiently acted on the charge of sugar contained within the basket 0 the valve m through which the washing liquid .is supplied to the basket is againclosed by turning the crank. 33 of the controlling apparatus 0 into initial position. When returning 'the controlling apparatus 0 into initial position the brushes- 35 and w areremoved from the contact members 13, 32.and 2. Therefore the first one of the above-named circuits is broken between the said contact members 12 and 23, the electromagnet n is deenergized, and the spring of the valve m closes the water supply Z. The breaking of the contact at a: and 2 by returning the controlling apparatus 0 'into initial position does not affect the second circuit, because the branch circuits, 21, 22,v

39, 28, 27, 25*closed by the switch 38 replaces'the open portion of thesecond circuit s ag-26, 34, 25. Thus the electromagnet k remains operative, until the operation of-the centrifugal basket is finished and the said basket isemptied and a new charge ofsugar is supplied thereto by depressing the hand lever e of the switch p.

Kit is desired to reverse the position of the valve 71 for connecting the pipe) with the gutter h afterthe washing operation is finished, the lever 40 is set into positionfor permitting the brush in to be lifted by the 5 ring 26 into elevated position, as has been siiown in Fig. 4. Preferably, the said lever is confined within a'locked box. r If, with they lever40 in thesaid rocked position, the controlling appa'ratusois turned by means ofthe crank 33 in the direction of the arrow shown in Fig. 2, after supplying a charge to' the basket andstarting rotation thereof, the brush 35 connects the contact members 13, 32, so that the. first one of the above descr bed circuits is closed by means of which the electromagnet n of the valve m is energized. The brush :1: slides on the insulatingplate 3/ covering the contact member y without closing the circuit including the electromagnet k of the valve 2'.

. 1 en returning the controlling apparatus 0 at the end of the washing operation within 14, 5, 15, 10, e, 9, 16, 6, 7, 17, k, 18, s, 19, 41,26, 26, 34, 25, 25, 38, 24, 3', 2, and to the lead '23. Thereforethe electromagnet'k sets the valve 6 into position for connecting the pipe f with the gutter h, and the electromagnet of the switch 38 attracts the armature 39, which therefore closes the contacts 22 and 28. 7 After the brush w has passed the contact member 3 the circuit 11, 1, 14, 5, 15, 10, e, 9, 16, 6, 7, 70, 1s, 8, 20, 2, 21, 22, 39-, 28, 27, 25,

25, 38, 24, 3,2, 23 remains closed, so that the electromagnet k remains energized until a newcharge of sugar is supplied to the hasket 0 and the contacts 9, 10 are separated by opening the gate (1 of the distributing apparatus b by means of the lever e.

. In Figs. 6 to 9 I have shown a modification in which after the first operation of the centrifugal basket for removing the molasses,

the charge ofsugar is subject to two,or more washing operations, the arrangement being such that predetermined amounts ofwashing liquids are supplied in definite succession, and that the said operations can not be repeated. According to each washing .operation, the deliverypipe or the centrifugal machine is. shifted for discharging the liquids. to different gutters. Further, provision is' made for locking the gate of the distributing chamber controlling the supply of the charge a to the centrifugal basket until the centrifugal V basket has completed its work and come to rest. Further, provision is made for reventing the supplyof the washing-'liqui s to the basket until after supplying the charge to thebasket, the centrifugal machine has been unlockednand started its rotary movement.

Referring now in detail to the said fi ures,

and more particularly to Figs. 6 and and through a delivery pipe ainto the disthe charge of sugar 1s supplied from the mixer a Y tribut-ing apparatus 6 provided with a plurality of gates done for each of the centrifugal baskets c cooperating therewith, the said gates being adapted to be elevated and lowered by means of the hand operated lever e.

The charge of sugar is supplied to the centrifugal basket by means of a chute b From the centrifugal machine 0 the liquids are discharged through the pipe 7 provided with three outlets 7, f and i disposed respective- 1y above the gutters g, h and a third gutter h The gutter y is" designed for receiving the molasses separated from the sugar by the first operation of the basket, and the gutters h, 71. are designed to receive the washing liquids obtained by supplying a washing medium such as water, steam, or the like to the charge "of sugar. If for example after separating the molasses from the charge of sugar, by the first operation of the basket c,'water is supplied to the sugar for washing the same, the first washing liquid delivered from the basket is supplied to the gutter h, and if thereafter steam is supplied to the basket, the second liquid thus obtained is supplied to the gutter .h The discharge of the liquids through the said outlets is controlled by the valve cone '7? and a second valve cone 2' by means of which 'the outlets f and f can be closed. The valve cones i and i are adapted to be operated by electromagnets k and k springs 72 k being providedfor forcing the valve coneson their seats. When both valve cones i 91 are placed on-their seats the outlet i is open, and if thereafter the valve cone '5 is unseated theliquid is discharged from the pipe f through the outlet f and into the gutter 71.. When unseating the valve 'cone 6 the liquid is delivered through the outlet f and into the gutter h For supplying the washing liquids to the basket the pipe Z and a second pipe l are provided, the pipe'l being connected to" a supply 'of water, andthe pipe l having a supply of, steam. In the pipes l and l valves m andm" are included, which are adapted to 1 be elevated by electromagnets n and n,

springs'n and'n tending to close the valves. At the beginningof the operation of the centrifugal machined both valve cones i and i are in position for closing the outlets f and i so that the molasses is delivered through the outlet 7'. Before or after opening the valve m for supplying the first washing liquid to the basket the valve cone i is unseated so that the-first washing liquid is discharged through the outlet f and mtothe gutter h.

Finally the-valve cone'i is' raised from its seat, after the valve m has Ellgleln opened for) supplying. the second w ver g is formed with a. longitudinal slot 1 engaged by' a pin projecting downwardly from a locking bolt 8 guided in the casing enclosing the centrifugal basket and adapted 'toengage a recess t'for locking the basket inposition. The bolt 8 is adapted to be locked ir its end positions by means of 'a latch H- bolt 41, the said latch bolt being adapted to be set into locking position by hand.

The hand lever e controlling the gate d of the distributing apparatus 6 is connected with a disk u formed with a recess M and above the said disk there is an electromagnet 204 the core a of which is adapted for locking engagement with the recess u? of the disk -u.

The electromagnet 204 is connected byleads 88 and87 respc tively with the contact member 202 and the negative current supply 89. The positive current supply 85 is connectedto the contact member 201.

Before beginning the operation, the lever q is in the position shown in Fig. 7 thus locking the centrifugal basket 0 and connecting the contact members 201 and 202 by means of its rear end 86. Thus the following circuit is completed: source of electric energy 85, 201, 86, 202, 87, electromagnet 204, 88, 89, 4

sourceof electric energy. Thus the electromagnet holds the armature a in elevated position in which the disk ui's unlocked and the contacts 205' and 207 are interrupted. Now

the hand lever e is rocked in a direction for lifting the gate cl, so that a charge of sugar is passed into the centrifugal basket. The gate (Z is closed by rocking the lever e upwardly into the position shown in Fig. 6. By shiftioo ing the lever g and the arm 86 from: the po- .sition shown in Fig. 7 in which the contact members 201 and 202 are connected for energizing the electromagnet 204 and the centrifu'gal basket 0 is locked, into the position in which the contact members 201 and 203 are bridgedand the basket 0 is released, the circuit 85201-20287204-88-89 is interrupted. Therefore the electromagnet204 is deenergized thus allowing the core w? to drop and.

to lock the disk at and the lever e in position,

so that the said lever can not be operated any more. while the. basket rotates. Further, a pair of 'contact members 205 and 207 are bridged by a contact spring 206 carried by the armature, thus completing a partial circuit 85--2O1 862O3' 205206 207 said circuit including a push-button D and being continued from 214 over 945-215-216- 217218-21995722089. When de-' pressing the push-button D the said partial circuits are connected so as to complete the following circuit: (1) 85201 -86?-203 90 205 -206 -207- 91-208-2'09-210- circuit including atime switch-U the operation of which isthus started. If thereafter an arm i 212 of the said time switch engages a contact 229, the following-circuit is Completed: (11) 96'-228 101-227 72-70100 -9998- 220-'89. The contact 228-is connected by a branch circuit (IF) 228 97220 with the negative current supply 89. The coils 97, 99

and the coils 109, 119,121 -and 146 referred to hereinafter are parts of relays adapted when. energized to operate switches 232, 236, 54, 240,44 and 69. Further, when energizing the coils 109, 121, 146 bridges 216, 47, 209 and a 61 are retracted from contacts controlled thereby, By'thecircuit II completed by the time switch U and the branch circuit II the 7 switch arms 232 and 236 are operated by reaket. By energizing and k the valve 112. for supplying water son of the supply of current to the coils 97 and 99. Thus the electromagnets 1n and k are connected to circuits III and IV; (III) 133- 230232231--1434t-1 l1140 and (IV) 133230134 -233-.236 -235147--k 142-440. By means of the electromagnets 'n A to the basket and the valve '5 for deliverm the liquid discharged from the basket throng the pipe f,) and into the gutter h are opened.

If after a certain period of time which has been exactly set beforehand, the arm 212 of the time switch U leaves the contact 229 the circuit II including the relay 97 is interrupted, and the switch arm 232 is moved by a spring into drawing. v

By the arm 212 leaving the contact 229 the circuit II is interru ted. But the switch arm 6 is not. returne into initial position be! cause the coil 99.is further energized by the circuit (ID). 85-201-86-1 20390205-r 206-207-91-208 209 210--145-2-37- 236234144'8099-'-98.220+-89. This circuit 11' is afterwards interrupted when the secondwashingmedium is supplied to the basket. Y t In the elevatedposition the electromagnet k. lifting the valve 1: closes, by means of contacts 74 and 75, a circuit (V) 85-20186- 203-90 -205'206-207r91-208106-+56 107-'74 -75 -!10878-109"21995-- 220-89. ;Further,.a current issuppliedfrom contact 78 over contact 110 through a signalling lamp nd lead 111 over contact members 218 and 219 to the negative lead 89. Bythe said 219 the attendant'is advised that the first washing liquid is being supplied to the basthe coil 109 the bridge '216 is lifted and theswitch arm 54 reversed. By liftingthe bridge 216 the circuit I is in 'terrupt'ed between the contact members 215 and 217 ,so that asecond operation of the Q push-button D would be ineffective. By reot/ltd the circuit v ap-to versing the switchj-fit the current is sup lied contact 56 and cm the formerposition shown in the the push-button D thence over m saua-na-sa-ns' to the left hand contact 58 of the push-button D", so that the second push-button D can bedepressedafter the signal LK has become visible. p

If the valve cone-i, is tobe operated by the electromagnet is after the liquid contained within the pipe f has been completely delivered, the electromagnets n and should not- I simultaneously become operative after depressing the push-button D but the electro- 'magnet k'must become operative prior to the electromagnet 'n sufliciently for permitting the said liquid to flow out of the'outletf. Automatic means are providedfor regulatin this succession of the operations of the sai electromagnets, which means'consist of a s'ec-.

0nd time switch U the function and period of operation of which-can be regulated, and.

which supplies electric energy to the electromagnet 70' only at the desired moment, For retarding the operation of the electroma et k a hand 0 erated switch S is provided w ich is provide with five contact'members 70, 226,

227,222 and221. If it is not desired to retard'the said operation a plug 81 is put into the switch" S, said plug connecting the contact members 7 O-and 227 by a bridge 7 2.v

For retarding the operation'the plug 81 is I removed and replaced by a plu 82 provided with two bridges 71 and 73 a apted to connect the contacts 221, 222 .and the contacts 226, 70 respectively. a

' Even after reversing the switch S by means of the plug 82 thecir'cuit' I is again closed and the time switch U started b depressing When t e arm 212 makes contact with the contact 229' the coilof the, relay 97 is energized by the circuit II, the contacts 220 and 228 being respectively connected to the positive and negative leads 85 and 89, 0 that the electromagnet n is energized by urrent flowing through-the circuitIII. After depressin the push-button switch D, and inserting t e plu 82 into the switch S, the retarding switch 1% is set into opera- 21945-220459. When the arm 224 of the I said switch U engages the contact 225 the circuit -206 207-91-208209210 102-223 -224225-105 226-7 1-7 0-10080- (VII) 85-201-86-203-90-205 I 99-9822089 is closed. By supplying current to the coil 99 and operating the switch arm236 the circuit IV including the electromagnet his closed. By includm the time switch U in the circuit in lieu o the time switch U the operation of the electromagnet k is delayed.- When energizing the electro-' magnet is operating the valve 2' the contacts 74 and 7 5 close the circuit V, by means of which the lamp circuit V is switched in,and current is supplied to the circuit V to the contact 56, over 54 53--113114-52115 to the left hand contact 58 of the push button ,5 switch D Now the push-button sw1tch 1) can be operated. If thereafter the switch arm 224 leaves the contact 225 the circuit VII is again interrupted. Thus the supply of current to the circuit IV is interrupted. But the electromagnet la remains energized,

and the valve 2' remains in elevated position,

because the circuit II" is still closed.

4 By depressing the push-button switch D the following branch circuits VIII and .VIII are connected into a circuit VIII:

.114 52 115 5s and (VIII")'59116-60 6263--64117219 95 220 89, and

' From the contact 49 a circuit IX is-branched 01f, which is connected with the negative 9 5 22089. Byen'ergi zingthe coils 119 and 121 the switch arms 240 and 44 are operated,

" and the contact 46 4748fis interrupted-acme M The switch arms 240 and 44 throw the circuits X and XI into operation, so that the electromagnets n and k are energized by means of which the valve m for supplying steam to the centrifugal basket and the valve 2' are lifted,

the said circuits being as follows: (X) 133-. 230-134233135238 240+239138 10 -139- 140, and (XI) 133- 230 1'34- 233135- 238f113624=144-127+k 140. When being energized the electromagnet 70 closes a circuit XII at thecontacts 7 6 and 77 :,(XII)' 85-2018620390'205 206 207 91 208 130 ,131 76 77- 132 65 146 64 117 219 95 220-89. From the contact 65 of thesaid cir-, .cuit XII a circuit 'XIII'i's branched oil, which is connected over 12868123LK 124 cuit the lamp LK is illuminated showing to the attendant that the second washing medium is being supplie to the centrifugal )ba'sket. By the circui \XII the .coil 146 of a relay is energized, by means of which the switch 69 is. operated and the connection between the contacts 606162 and 208-209- 210 is interrupted. If the arm 51 ofjthe time switch Ufl-leaves the contact 50 the circuits IX and IX? are interrupted.- The coilllQ with the contact 64. By the said branch cirdeenergized, andthe switch arm 240 is rocked into initial position, while current is still supplied to coil 121 through a branch circuit (IX 8 5201.-86-.203'90205206 20791'2Q813Ol37424445 l26 46l21122;-7911863- 64117219- 95 220- 89. By the breaking of the contacts '60-61-62 the circuit VIII which before was closed by depressing the push-buttoms'witch D is disconnected from the current supply, so that repeated de pressing of the switch D is ineffective.

Since also the contacts 2082'10 are separated by the bridge-209, the branch circuit 11 is opened. The coil 99 is deenergized, and therefore the circuit IV supplying current to the electromagnet k is disconnected from the current supply. The valve i is seated by the I spring 70 and further, the contacts 747 5 are separated,-.and the circuit V broken. However, the coil-109 remains operative by being included in the branch circuit V 201 86203 "90i-205206-20 -91208, 10656-54I'53113%112555457- -148 78'109 219 95.22089. Even when depressing the push-button switch D no effect. is produced because the coil 109 is still energized. v At the end of the operation of the centrifugal basket the-circuit XII is interrupted by operating the hand lever 1 and pressing the lockingboltsthereofinto engagement with the recess t of'the centrifugal basket. The rear.

end 86 of the lever g is shifted from contact 203 into engagement with contact 202. Thus the'electromagnet 204 is energized, and its is retracted from the notch u of the disk u, so that the gate. .03 can be moved upwardly for permitting another chargeof sugar to pass into the centrifugal basket 0. I claim: 4 I 1 1 The combination, with arentrifugalmachine having a supply meansfor the charge for causing to said-machine, a supply means for a treatmgmedium, and discharg1ng means, a plu-v electromagnetic m'eans foro'pening said discharging means to discharge into any vone pf -sa'id containers, two switches electrically connected with each ing for controlling the currentsupply to said electromagnets and one operatively con- ,11,ected with said means for opening and closing. said suppl means forithe. chargeI-Fi other and cooperat- 2. The com ination, with; .a centrifugal 7 machine having a supply means for the charge to said machine, a, supply means for .a treating medium and d V I a plurality of 'co-t ter separated fro opening and closing ;-1ao r recelvingmat the charge, means {for schargrng'means,

said supply means for the charge, electromagnet means for opening and closing; said supply means of a-treating medium, electromagnetic means for causing 'saiddischarging means to discharge into any one oi; said containers, two'switches electrically connected witheach other and cooperating for controlling the current supply to 1 said electromagnets and one operatively con-v nected with said means for opening and closing said supply means forthe charge and the other one being a-multiple switch connected with an automatic circuit making device. I

3. The combination, -with k a centrifugal machine having a supply means a for the charge, a supply means for a treatingmedium, and discharging means, of a plurality of containers for receiving matter separated from the chargethrough said discharging means," means for opening and closing said supply means for the charge, means for opening and closing said supply means for a v treating medium, means for causing said discharging means todischarge intoany one of 531d containers, operating means for said means for opening and closing said supply means for a treating medium and said means, controlling said discharging means, locking means for said centrifugal machine opercharge adapted when-in non-locking posiativelyhonnectedwith said operating means, and locklng means for said means for open-- ing and closing said supply means for the tion. to preventoperation of said operating means by said locking means for said centrifugal machine.

'4. paratus as claimed in claim 3, in

which a plurality of supply means for treating media are provided, andin which the atin'g the, discharge of the centrifugal mameans for openin the supply for the treating medium and or operating the discharge are dependent upon each other so that the said supply means for the treating media are opened in predetermined succession.

5. -pparatus as claimed in claim 3, in which the apparatus for'opening the supply means for the washingmedia and for operchine are dependent upon one another so that by the-operation of one of the'apparatus the for washing li uids and fo operating the discharge inclu e time switc es controlling the periods of time the supply means for the washing liquids are opened; I

7. Apparatus as claimed in claim. 3 in which a plurality of supplymeans' for treating media are provided,'and in which the means for opening the supply means for the lid treat-ing medium and for operating the discharge are dependent u on each otherso that the said supply means or the treating media are opened in predetermlned succession, and,

in which the apparatus for opening the supply means for the washing'media and for operating the discharge of. the centrifugal machine are. dependentupon one another so 4 that by the operation of one of the apparatus the other apparatus is brought into position ready for operation, while the firstnamed' apparatus is. locked by, the operation of-the second apparatus.

8. Apparatus as claimed 'claim 3, in I I which a plurality of supply'means for treat-.

ingmed'ia are provided and in which the means for opening the supply means for the treatingmedium and for operating the discharge are dependent upon. each other so that-the said supply means for the treating media are opened in predetermined succes- 'sion, and comprising electric operating means, in which the c rcuits for o emng the operating the discharge include time switches controlling-the periods of time the supplies for the washing liquids are opened.

9. In combination, a centrifugal machine supply means for washingliqui s and for having a supply'means for the charge, a supply means for a treating medium, and discharging means,-of a plurality of containers fofreceiving matter separated from the charge, means for controlling the supplymeans, the treating medium and the discharge means comprising electrically interlocked means for shifting the discharge means from cooperation .with one of said containers to cooperate with another: ofsaid containers .dependent upon the means for the charge. 7

- 10. In combination with a. centrifugalmaposition of the'supply chine, of means controlling the supply of the charge to said machine, electricall controlled nieans controlling the supply 0 a treating medium to said machine, electrically controlled means controlling the'dischar'ge of material from said machine into any one of a lurality. of containers selectively, a closure orthe basket of said machine, an electriccontroller cooperating with said closure, supply controlling means and said electrically controlled means and electrically connected therewith vwhereby to prevent openin the 7 charge supply while the closure is close and ensure selective cont 91 of the discharge means. 1

- 11; In combination with a centrifugal machine, means controlling the supply of the charge to said machine, means for controlling the supply' of a treating medium, means for discharging material se arated from 1 the charge and a plurality o containerssforreceiving said separated -material, said dis-.

charge means comprising electromagnetical- -ly controlled valves for each container, said supply controlling means being electrically interlocked with the valve control means whereby the relative positions of the valve are dependent upon the position of the sup ply control means.

Y 12.-v In combination with a centrifugal machine, means controlling the supply of the charge to said machine, electromagnetically controlled means controlling the supply of a treatin medium to said machine, electromagnetically controlled means controlling the discharge of material from said machine into anyone of a plurality of containers selectively, said electromagnetically controlled means being electrically interlocked with said-supply controlling means whereby the position of said latter means controls the operation of said electromagnetically controlled means.

13. The combination with a centrifugal machine, of means for controlling the supply for the charge, means controlling the supply fora treating medium, a plurality of containers,

from sai machine, discharging means, and

4 means for causing said discharging means to discharge into said containers in succession and to control the supply of the treating medium, all said means being electrically interlocked, and selective means to change the order of succession of the operation of the discharge means and themeans controlling the supply of the treating medium.

In testimony whereof I have aflixed my signature.

OTTO ATHENSTEDT.

forreceiving matter discharged 

